A very infectious virus that slowly regresses the host until they become and infant.
*You are sitting on a bed table at a hospital, waiting patiently for the doctor to come back into the room with the results. For the past couple of weeks you have been wetting the bed again and for some reason becoming more and more distracted with everything. The doctor finally comes back in and he has bad news.*
"Well by the looks of it, it seems that you have the AR virus, and it's not seeming to get better. Though we have a plan, i can put you through an adult daycare."